Looking for Help good people I am modifying a website here so " System.InvalidOperationException: ExecuteReader: CommandText property has not been initialized "

/*
Copyright 2002-2011 Corey Trager
Distributed under the terms of the GNU General Public License
*/

using System;
using System.Data;
using System.Data.SqlClient;
using System.Text;

namespace btnet
{
public class DbUtil
{
///////////////////////////////////////////////////////////////////////
public static object execute_scalar(string sql)
{
if (Util.get_setting("LogSqlEnabled", "1") == "1")
{
Util.write_to_log("sql=\n" + sql);
}

using (SqlConnection conn = get_sqlconnection())
{
object returnValue;
SqlCommand cmd = new SqlCommand(sql, conn);
returnValue = cmd.ExecuteScalar();
conn.Close(); // redundant, but just to be clear
return returnValue;
}
}

///////////////////////////////////////////////////////////////////////
public static void execute_nonquery_without_logging(string sql)
{
using (SqlConnection conn = get_sqlconnection())
{
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.ExecuteNonQuery();
conn.Close(); // redundant, but just to be clear
}

}

///////////////////////////////////////////////////////////////////////
public static void execute_nonquery(string sql)
{

if (Util.get_setting("LogSqlEnabled", "1") == "1")
{
Util.write_to_log("sql=\n" + sql);
}

using (SqlConnection conn = get_sqlconnection())
{
SqlCommand cmd = new SqlCommand(sql, conn);
cmd.ExecuteNonQuery();
conn.Close(); // redundant, but just to be clear
}
}

///////////////////////////////////////////////////////////////////////
public static void execute_nonquery(SqlCommand cmd)
{
log_command(cmd);

using (SqlConnection conn = get_sqlconnection())
{
try
{
cmd.Connection = conn;
cmd.ExecuteNonQuery();
conn.Close(); // redundant, but just to be clear
}
finally
{
conn.Close(); // redundant, but just to be clear
cmd.Connection = null;
}
}
}

///////////////////////////////////////////////////////////////////////
public static SqlDataReader execute_reader(string sql, CommandBehavior behavior)
{
if (Util.get_setting("LogSqlEnabled", "1") == "1")
{
Util.write_to_log("sql=\n" + sql);
}

SqlConnection conn = get_sqlconnection();
try
{
using (SqlCommand cmd = new SqlCommand(sql, conn))
{
return cmd.ExecuteReader(behavior | CommandBehavior.CloseConnection);
}
}
catch
{
conn.Close();
throw;
}
}

///////////////////////////////////////////////////////////////////////
public static SqlDataReader execute_reader(SqlCommand cmd, CommandBehavior behavior)
{
log_command(cmd);

SqlConnection conn = get_sqlconnection();
try
{
cmd.Connection = conn;
return cmd.ExecuteReader(behavior | CommandBehavior.CloseConnection);
}
catch
{
conn.Close();
throw;
}
finally
{
cmd.Connection = null;
}
}

///////////////////////////////////////////////////////////////////////
public static DataSet get_dataset(string sql)
{

if (Util.get_setting("LogSqlEnabled", "1") == "1")
{
Util.write_to_log("sql=\n" + sql);
}

DataSet ds = new DataSet();
using (SqlConnection conn = get_sqlconnection())
{


{
using (SqlDataAdapter da = new SqlDataAdapter(sql, conn))
{
if (sql == null)
sql = "";

System.Diagnostics.Stopwatch stopwatch = new System.Diagnostics.Stopwatch();
stopwatch.Start();

da.Fill(ds);//// here there is a problem
stopwatch.Stop();
log_stopwatch_time(stopwatch);
conn.Close(); // redundant, but just to be clear
return ds;
}
}
}
}

///////////////////////////////////////////////////////////////////////
public static void log_stopwatch_time(System.Diagnostics.Stopwatch stopwatch)
{
if (Util.get_setting("LogSqlEnabled", "1") == "1")
{
Util.write_to_log("elapsed milliseconds:" + stopwatch.ElapsedMilliseconds.ToString("0000"));
}
}

///////////////////////////////////////////////////////////////////////
public static DataView get_dataview(string sql)
{
DataSet ds = get_dataset(sql);
return new DataView(ds.Tables[0]);
}

///////////////////////////////////////////////////////////////////////
public static DataRow get_datarow(string sql)
{
DataSet ds = get_dataset(sql);
if (ds.Tables[0].Rows.Count != 1)
{
return null;
}
else
{
return ds.Tables[0].Rows[0];
}
}

///////////////////////////////////////////////////////////////////////
public static SqlConnection get_sqlconnection()
{

string connection_string = Util.get_setting("bugtrackerConnectionString", "MISSING CONNECTION STRING");
SqlConnection conn = new SqlConnection(connection_string);
conn.Open();
return conn;
}

///////////////////////////////////////////////////////////////////////
private static void log_command(SqlCommand cmd)
{
if (Util.get_setting("LogSqlEnabled", "1") == "1")
{
StringBuilder sb = new StringBuilder();
sb.Append("sql=\n" + cmd.CommandText);
foreach (SqlParameter param in cmd.Parameters)
{
sb.Append("\n ");
sb.Append(param.ParameterName);
sb.Append("=");
if (param.Value == null || Convert.IsDBNull(param.Value))
{
sb.Append("null");
}
else if (param.SqlDbType == SqlDbType.Text || param.SqlDbType == SqlDbType.Image)
{
sb.Append("...");
}
else
{
sb.Append("\"");
sb.Append(param.Value);
sb.Append("\"");
}
}
Util.write_to_log(sb.ToString());
}
}

} // end DbUtil

} // end namespace